Servo Magazine (October 2008)

A Digital RF DataLink

Wire is a wonderful thing. There’s not much that is more reliable than a short piece of stranded or solid copper wire between the ends of an electrical connection. However, there are situations where electrically tying devices together with long runs of wire is impractical. Light does a good job of replacing copper when the conditions are right, but if one needs to move electrons reliably over a relatively long distance there’s no better conductor than the Earth’s magnetic field...

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Mind/Iron

3D printing has become so good that the printed prototypes outlive their usefulness. Most of my 3D printed plastic prototypes serve their purpose for perhaps five minutes and then end up in landfills along with lots of empty filament spools. ABS plastic and even so-called biodegradable polylactic acid (PLA) will probably survive decades in the environment. Isn’t it time to find ways to repurpose this technology to decrease its footprint?